A compressible turbulence model for the pressure-strain correlation

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Recent DNS (Direct Numerical Simulation) results indicate that the main compressibility effect comes from the reduced pressure-strain term due to reduced pressure fluctuations. Using the concept of moving equilibrium in compressible homogeneous shear flow, we develop a new compressible pressure strain model by modifying the incompressible linear pressure-strain model, which is characterized by a decrease in the primary redistribution term but an increase in the secondary redistribution term. The model was applied to a compressible mixing layer. The predicted results show that the growth rate is reduced with increasing convective Mach number and the Reynolds stresses are reduced. All the components of the pressure-strain term and the shear stress anisotropy are reduced with the increase of the compressibility, whereas the normal stress anisotropy is increased-then results are in accord with experimental and DNS results.
Publisher
TAYLOR FRANCIS LTD
Issue Date
2005
Language
English
Article Type
Article
Keywords

PLANAR VELOCITY-MEASUREMENTS; SHEAR-FLOW; MIXING LAYER; GROWTH-RATE; SIMULATION; CLOSURES; PROGRESS; SCHEMES

Citation

JOURNAL OF TURBULENCE, v.6, no.2

ISSN
1468-5248
DOI
10.1080/14685240500055095
URI
http://hdl.handle.net/10203/86111
Appears in Collection
AE-Journal Papers(저널논문)
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